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PubMed2003

Prevalence and incidence of chronic fatigue syndrome in Wichita, Kansas.

BACKGROUND: Chronic fatigue syndrome (CFS) is a debilitating illness with no known cause or effective therapy. Population-based epidemiologic data on CFS prevalence and incidence are critical to put CFS in a realistic context for public health officials and others responsible for allocating resources and for practicing physicians when examining and caring for patients. METHODS: We conducted a random digit-dialing survey and clinical examination to estimate the prevalence of CFS in the general population of Wichita, Kan, and a 1-year follow-up telephone interview and clinical examination to estimate the incidence of CFS. The survey included 33 997 households representing 90 316 residents. This report focuses on 7162 respondents aged 18 to 69 years. Fatigued (n = 3528) and randomly selected nonfatigued (n = 3634) respondents completed telephone questionnaires concerning fatigue, other symptoms, and medical history. The clinical examination included the Diagnostic Interview Schedule for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, laboratory testing, and a physical examination. RESULTS: The overall weighted point prevalence of CFS, adjusted for nonresponse, was 235 per 100,000 persons (95% confidence interval, 142-327 per 100,000 persons). The prevalence of CFS was higher among women, 373 per 100,000 persons (95% confidence interval, 210-536 per 100,000 persons), than among men, 83 per 100,000 persons (95% confidence interval, 15-150 per 100,000 persons). Among subjects nonfatigued and fatigued for less than 6 months, the 1-year incidence of CFS was 180 per 100,000 persons (95% confidence interval, 0-466 per 100,000 persons). CONCLUSIONS: Chronic fatigue syndrome constitutes a major public health problem. Longitudinal follow-up of this cohort will be used to further evaluate the natural history of this illness.

Adolescent↗
PubMed1984

A commingling analysis of quantitative neuromuscular performance in a Kansas Mennonite community.

The method of commingling analysis is applied to distributions of six quantitative neuromuscular traits. Results show that only two of these traits may be described by the single normal distribution commonly associated with quantitative variables. The remaining four traits show significant skewness which is best accounted for by a mixture of three component distributions. The pattern of commingling found suggests the presence of a major (megaphenic) effect operating in these traits. Further, evidence is found which links the major effect in three of the four commingled traits to a single process which may be related to neurological control. The etiology of the major effect (i.e., whether genetic or environmental) cannot be determined from commingling analysis, but some suggestions are offered based upon the nature of the traits themselves and the major effects.

Adolescent↗
PubMed1986

Mental health of small-town Kansas elderly: a report from the Great Plains.

This paper presents an overview of a large-scale interview study of the subjective well-being of approximately 1,000 older (65 + years) Kansans residing across 18 small towns (2,500 and under in size). Descriptive results of assessments of social and psychological well-being are presented, along with a second-order taxonomy of well-being profiles. Results of path model analyses of physical, psychosocial, and demographic predictors of mental health of both men and women are offered. Data pertaining to the utilization of services are also presented.

Aged↗
PubMed1998

Flies and their bacterial loads in greyhound dog kennels in Kansas.

Breeders of greyhound dogs traditionally feed racing animals and nursing bitches raw meat, and that meat generally is obtained frozen from commercial renderers. Previous studies have shown that the rendered meat is frequently contaminated with enteric bacteria, including Salmonella spp., and that during thawing the rendered meat is exposed to filth flies common in dog kennels. Nursing greyhound pups tend to experience a high morbidity and mortality from intestinal infections, and we attempted to determine in this study whether enterics could be spread to pups through contaminated flies. At intervals during 1995 and 1996, flies were trapped or were net-collected from 10 dog breeding kennels in the region around Abilene, KS. Trapped flies were identified and counted to determine population numbers, and netted flies were cultured in tetrathionate broth and streaked to medium selecting for Salmonella sp. and other lactose-negative Gram (-) bacteria. The relative numbers of different fly species varied with the sampling method, but traps and sweep nets produced similar proportions of the different fly species. Blow flies were twice as likely to be contaminated with enteric bacteria as any other fly. The most common enteric bacteria found were Proteus spp., followed by Providencia spp., Pseudomonas spp., and Salmonella spp. The incidence of Salmonella and Proteus spp. seemed to correlate more with accessibility of flies to dog excrement than to rendered meat. The apparent high incidence of enteric contamination of filth flies clearly implicates them as vectors of enteric diseases in kennels.

Animals↗
PubMed1990

Health problems in Galena, Kansas: a heavy metal mining Superfund site.

Health problems at a heavy metal mining Superfund site were surveyed using prevalence information from 1980-85. Current environmental exposures include lead and cadmium in drinking water, mine wastes, and surface soils. Age- and sex-specific illness rates in whites in an exposed town (Galena) were compared with similar rates in two control towns. Multivariate analyses of morbidity data examined statistically significant risk factors for relevant illness in the three towns. Mortality rates for 1980-85 for white residents of Galena and for the U.S. were compared using univariate analysis. Among residents of the three towns who had lived there at least 5 years prior to 1980, there was either a statistically significant or borderline excess reported prevalence in Galena of chronic kidney disease (females aged greater than or equal to 65), heart disease (females aged greater than or equal to 45), skin cancer (males aged 45-64), and anemia (females aged 45-64). Multivariate analyses revealed statistically significant associations of stroke, chronic kidney disease, hypertension, heart disease, skin cancer, and anemia with variables related to Galena exposure. Personal physicians were contacted to confirm the information provided by the subjects; validity was good for all reported illnesses except chronic kidney disease. A statistically significant excess of deaths from hypertensive disease (females aged greater than or equal to 65), ischemic heart disease (males and females aged greater than or equal to 65), and stroke (females aged greater than or equal to 65) was found in residents of Galena City. This study confirms that environmental agents in Galena are associated with, and may have contributed to, the causation of several chronic diseases in residents of this community. Further studies are recommended.

Adult↗